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The best way to understand what a hook does is to look at where it occurs in the source code.
do_action( "hook_name" )apply_filters( "hook_name", "what_to_filter" ).Remember, this hook may occur in more than one file. Moreover, the hook's context may change from version to version.
| Line | Code |
|---|---|
| 1201 | * |
| 1202 | * @since 4.9.6 |
| 1203 | * |
| 1204 | * @param string[] $post_templates Array of page templates. Keys are filenames, |
| 1205 | * values are translated names. |
| 1206 | * @param WP_Theme $this The theme object. |
| 1207 | * @param WP_Post|null $post The post being edited, provided for context, or null. |
| 1208 | * @param string $post_type Post type to get the templates for. |
| 1209 | */ |
| 1210 | $post_templates = (array) apply_filters( 'theme_templates', $post_templates, $this, $post, $post_type ); |
| 1211 | |
| 1212 | /** |
| 1213 | * Filters list of page templates for a theme. |
| 1214 | * |
| 1215 | * The dynamic portion of the hook name, `$post_type`, refers to the post type. |
| 1216 | * |
| 1217 | * @since 3.9.0 |
| 1218 | * @since 4.4.0 Converted to allow complete control over the `$page_templates` array. |
| 1219 | * @since 4.7.0 Added the `$post_type` parameter. |